Ivanagić families are Croats and they are mostly from Pleternica. In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica and in Slavonski Brod area.
Prevalence
About 80 people with faimily name Ivanagić live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 9 Croatian counties, in 11 cities and 10 other places, mostly in Zagreb (20), Slavonski Brod (15), Sibinj in Slavonski Brod area (10), Pleternica (<10), and in Brdjani (<10).
Outside Croatia
Family name Ivanagić is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.